13667925666681 has 96 divisors (see below), whose sum is σ = 23401927471104. Its totient is φ = 7641100051200.

The previous prime is 13667925666677. The next prime is 13667925666721. The reversal of 13667925666681 is 18666652976631.

It is not a de Polignac number, because 13667925666681 - 2² = 13667925666677 is a prime.

It is a super-2 number, since 2×13667925666681² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13667925667681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 230602056 + ... + 230661318.

It is an arithmetic number, because the mean of its divisors is an integer number (243770077824).

Almost surely, 2^{13667925666681} is an apocalyptic number.

13667925666681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13667925666681 is a deficient number, since it is larger than the sum of its proper divisors (9734001804423).

13667925666681 is a wasteful number, since it uses less digits than its factorization.

13667925666681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60796 (or 60771 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 72.

The spelling of 13667925666681 in words is "thirteen trillion, six hundred sixty-seven billion, nine hundred twenty-five million, six hundred sixty-six thousand, six hundred eighty-one".